Browse Source
* In the case of multiple network cards, a valid host is returned * In the case of multiple network cards, a valid host is returned * In the case of multiple network cards, a valid host is returned * In the case of multiple network cards, a valid host is returned * fix LOCAL_ADDRESS not assigned value * fix LOCAL_ADDRESS not assigned value * fix LOCAL_ADDRESS not assigned value * fix lock error * fix lock error * end * end * end * end * code smell * code smell * code smell * code smell * code smell * code smell * code smell * lowering * messy * small change * compile error Co-authored-by: dailidong <dailidong66@gmail.com> Co-authored-by: gabry.wu <gabrywu@apache.org>pull/3/MERGE
CalvinKirs
5 years ago
committed by
GitHub
17 changed files with 309 additions and 68 deletions
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/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache License, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.apache.dolphinscheduler.common.utils; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import java.io.IOException; |
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import java.net.*; |
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import java.util.Enumeration; |
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import java.util.LinkedList; |
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import java.util.List; |
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import java.util.Optional; |
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import java.util.regex.Pattern; |
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import static java.util.Collections.emptyList; |
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/** |
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* NetUtils |
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*/ |
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public class NetUtils { |
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private NetUtils() { |
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throw new IllegalStateException("Utility class"); |
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} |
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private static Logger logger = LoggerFactory.getLogger(NetUtils.class); |
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private static final Pattern IP_PATTERN = Pattern.compile("\\d{1,3}(\\.\\d{1,3}){3,5}$"); |
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private static String ANY_HOST_VALUE = "0.0.0.0"; |
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private static String LOCAL_HOST_VALUE = "127.0.0.1"; |
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private static InetAddress LOCAL_ADDRESS = null; |
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private static volatile String HOST_ADDRESS; |
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public static String getHost() { |
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if (HOST_ADDRESS != null) { |
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return HOST_ADDRESS; |
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} |
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InetAddress address = getLocalAddress(); |
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if (address != null) { |
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HOST_ADDRESS = address.getHostAddress(); |
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return HOST_ADDRESS; |
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} |
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return LOCAL_HOST_VALUE; |
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} |
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private static InetAddress getLocalAddress() { |
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if (null != LOCAL_ADDRESS) { |
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return LOCAL_ADDRESS; |
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} |
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return getLocalAddress0(); |
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} |
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/** |
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* Find first valid IP from local network card |
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* |
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* @return first valid local IP |
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*/ |
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private static synchronized InetAddress getLocalAddress0() { |
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if (null != LOCAL_ADDRESS) { |
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return LOCAL_ADDRESS; |
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} |
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InetAddress localAddress = null; |
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NetworkInterface networkInterface = findNetworkInterface(); |
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Enumeration<InetAddress> addresses = networkInterface.getInetAddresses(); |
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while (addresses.hasMoreElements()) { |
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Optional<InetAddress> addressOp = toValidAddress(addresses.nextElement()); |
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if (addressOp.isPresent()) { |
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try { |
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if (addressOp.get().isReachable(100)) { |
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LOCAL_ADDRESS = addressOp.get(); |
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return LOCAL_ADDRESS; |
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} |
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} catch (IOException e) { |
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logger.warn("test address id reachable io exception", e); |
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} |
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} |
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} |
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try { |
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localAddress = InetAddress.getLocalHost(); |
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} catch (UnknownHostException e) { |
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logger.warn("InetAddress get LocalHost exception", e); |
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} |
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Optional<InetAddress> addressOp = toValidAddress(localAddress); |
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if (addressOp.isPresent()) { |
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LOCAL_ADDRESS = addressOp.get(); |
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} |
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return LOCAL_ADDRESS; |
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} |
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private static Optional<InetAddress> toValidAddress(InetAddress address) { |
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if (address instanceof Inet6Address) { |
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Inet6Address v6Address = (Inet6Address) address; |
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if (isPreferIPV6Address()) { |
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return Optional.ofNullable(normalizeV6Address(v6Address)); |
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} |
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} |
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if (isValidV4Address(address)) { |
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return Optional.of(address); |
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} |
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return Optional.empty(); |
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} |
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private static InetAddress normalizeV6Address(Inet6Address address) { |
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String addr = address.getHostAddress(); |
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int i = addr.lastIndexOf('%'); |
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if (i > 0) { |
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try { |
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return InetAddress.getByName(addr.substring(0, i) + '%' + address.getScopeId()); |
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} catch (UnknownHostException e) { |
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logger.debug("Unknown IPV6 address: ", e); |
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} |
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} |
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return address; |
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} |
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public static boolean isValidV4Address(InetAddress address) { |
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if (address == null || address.isLoopbackAddress()) { |
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return false; |
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} |
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String name = address.getHostAddress(); |
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return (name != null |
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&& IP_PATTERN.matcher(name).matches() |
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&& !ANY_HOST_VALUE.equals(name) |
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&& !LOCAL_HOST_VALUE.equals(name)); |
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} |
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/** |
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* Check if an ipv6 address |
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* |
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* @return true if it is reachable |
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*/ |
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private static boolean isPreferIPV6Address() { |
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return Boolean.getBoolean("java.net.preferIPv6Addresses"); |
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} |
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/** |
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* Get the suitable {@link NetworkInterface} |
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* |
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* @return If no {@link NetworkInterface} is available , return <code>null</code> |
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*/ |
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private static NetworkInterface findNetworkInterface() { |
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List<NetworkInterface> validNetworkInterfaces = emptyList(); |
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try { |
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validNetworkInterfaces = getValidNetworkInterfaces(); |
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} catch (SocketException e) { |
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logger.warn("ValidNetworkInterfaces exception", e); |
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} |
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return validNetworkInterfaces.get(0); |
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} |
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/** |
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* Get the valid {@link NetworkInterface network interfaces} |
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* |
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* @throws SocketException SocketException if an I/O error occurs. |
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*/ |
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private static List<NetworkInterface> getValidNetworkInterfaces() throws SocketException { |
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List<NetworkInterface> validNetworkInterfaces = new LinkedList<>(); |
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Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces(); |
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while (interfaces.hasMoreElements()) { |
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NetworkInterface networkInterface = interfaces.nextElement(); |
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if (ignoreNetworkInterface(networkInterface)) { // ignore
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continue; |
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} |
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validNetworkInterfaces.add(networkInterface); |
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} |
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return validNetworkInterfaces; |
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} |
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/** |
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* @param networkInterface {@link NetworkInterface} |
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* @return if the specified {@link NetworkInterface} should be ignored, return <code>true</code> |
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* @throws SocketException SocketException if an I/O error occurs. |
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*/ |
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public static boolean ignoreNetworkInterface(NetworkInterface networkInterface) throws SocketException { |
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return networkInterface == null |
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|| networkInterface.isLoopback() |
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|| networkInterface.isVirtual() |
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|| !networkInterface.isUp(); |
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} |
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} |
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@ -0,0 +1,57 @@ |
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/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache License, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.apache.dolphinscheduler.common.utils; |
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import org.junit.Test; |
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import java.net.InetAddress; |
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import static org.junit.Assert.*; |
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import static org.mockito.Mockito.mock; |
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import static org.mockito.Mockito.when; |
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/** |
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* NetUtilsTest |
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*/ |
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public class NetUtilsTest { |
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@Test |
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public void testGetLocalHost() { |
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assertNotNull(NetUtils.getHost()); |
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} |
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@Test |
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public void testIsValidAddress() { |
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assertFalse(NetUtils.isValidV4Address(null)); |
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InetAddress address = mock(InetAddress.class); |
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when(address.isLoopbackAddress()).thenReturn(true); |
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assertFalse(NetUtils.isValidV4Address(address)); |
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address = mock(InetAddress.class); |
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when(address.getHostAddress()).thenReturn("localhost"); |
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assertFalse(NetUtils.isValidV4Address(address)); |
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address = mock(InetAddress.class); |
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when(address.getHostAddress()).thenReturn("0.0.0.0"); |
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assertFalse(NetUtils.isValidV4Address(address)); |
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address = mock(InetAddress.class); |
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when(address.getHostAddress()).thenReturn("127.0.0.1"); |
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assertFalse(NetUtils.isValidV4Address(address)); |
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address = mock(InetAddress.class); |
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when(address.getHostAddress()).thenReturn("1.2.3.4"); |
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assertTrue(NetUtils.isValidV4Address(address)); |
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} |
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} |
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